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Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.46B [2007] >
IJC-B Vol.46B(03) [March 2007] >
| Title: | Synthesis of pyrazole and isoxazole in triethanolamine medium. |
| Authors: | Agrawal, Nitin N
Soni, P A |
| Keywords: | Chalcone
Pyrazole
Isoxazole
β-diketone
Triethanolamine |
| Issue Date: | Mar-2007 |
| Publisher: | CSIR |
| IPC Code: | Int.Cl.⁸C07D |
| Abstract: | Reactions of 2′-hydroxy chalcone dibromides 2a-l with phenyl hydrazine and hydrazine hydrate afford pyrazoles 1a-l and with hydroxylamine hydrochloride give isoxazoles 5a-f in triethanolamine medium. Similarly reaction of β-diketone 3b-e with phenyl hydrazine and hydrazine hydrate in TEA gives pyrazoles 4a-l in high yield in shorter time. The products are confirmed by their m.p., m.m.p., chemical analysis and IR, ¹H NMR spectral data. |
| Page(s): | 532-534 |
| ISSN: | 0376-4699 |
| Source: | IJC-B Vol.46B(03) [March 2007]
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